My main line of work is in home inspection. I've cruised this site a few times for answers to some plumbing questions in the past, and I have found the site to be very helpful to me.
There is a demand in my area for sewer drain line inspection, which would tie into my main line of work pretty easily. I was wondering what types of cameras would be better than others, and what options should be considered. We have a lot of houses built in the 1950's with root problems here. There is a pretty large price range in cameras, and usually you get what you pay for in that situation, but not always.
The camera should be "self leveling" and color.